city to families fun in the sun in philadelphia, to detroit, once that fog burned off. and for the storm weary in the northwest, a little thanksgiving gratitude for some snowy leftovers. >> so excited. my kids and i are having so much fun. >> a sign of the season. ginger zee with us on the streets of new york city. and ginger, that system carrying all that dangerous fog on the move tonight? >> reporter: that's right. it will redevelop. we were out here yesterday, warned you about it for that texas area and there it came. so, for tomorrow, please listen. if you are planning on traveling in that area, in the gray, from toledo all the way to almost d.c., south to atlanta and birmingham, parts of louisiana and mississippi, all included in what could be a dangerous morning. >> and you were telling me for the millions heading out tomorrow, probably going shopping, there's something else they'll notice. a dramatic change in temperatures? >> reporter: yes. just to the west of that. chicago today made it into the low 60s. by tomorrow, 30s and they'll feel like the 20s. so, a big slap in the face from this cold front. look at the temps ahead of it. atlanta, 70 tomorrow.